TYPE TRV"TRIPAC"Series

Vertical dry vacuum pump developed with newconcepts has been evolving to new vacuum technology.

T R I PA C

The new dry vacuum pump type TRV

is completely oil free type developedwith a new concept, which is different
from conventional dry vacuum pumps.
The cooling effect of a high efficiency
jacketed pump housing eliminatesinter cooler and drain tanks. The top
down transport of gas ensures rapida n d c o m ple t e d r aining . T h e p u m pinsures easy solvent recovery at thedischarge of the vacuum pump.

"TRIPAC "Vertical Dry Vacuum Pump Type TRV■Typical application
・Vacuum Distillation ・Pharmaceutical ,Medical Equip.,&Food industry
・Solvent Recovery ・Special gases Chemical industry
・Polymer Processing ・Vacuum Drying

Advantages●Top down configuration●Reduced power consumption

The top dow n t ra nspor t of ga s ensu res rapid a ndcomplete draining. The pump is strong to handle liquidcarry over and condensed liquid of gas and insures easy
solvent recovery at the discharge of the vacuum pump atatmosphere.

In all compression steps, the back-ﬂow cooling system(refer Page 3)are applied. Also in gas ﬂow passage to thenext stage, gas would be cooled down by water jacket.
This low temperature compression and cooling system arerepeated in all stages. This ensures low temperaturecompression. As a result, the pump has good eﬃciency andreduced power consumption.

●Compact & low maintenance●Low noise operation

As the vertical conﬁguration eliminates drain tanks andhigh frame, the pump footprint is very small.

The special designed compact vacuum pump is very low
noise type. The pump can be operated in any surrounding
condition.

●Wide operating range●Backing pump

The pump can be operated at any suction pressure. The
three lobe rotor design permits stable performance at anysuction pressure from atmospheric to suction shut-oﬀ.

For larger pumping system or high vacuum application,
this pump can be used with a mechanical booster. It leads
to make a compact vacuum system using the vertical dry
vacuum pump.

Low power consumption and high efficiency.
The vertical dry vacuum pump has the best configuration
to handle liquid carry over and condensed liquid.
Back-flow cooling system enable to make the gas temperature low andkeep the efficiency high.

Back-Flow cooling system
W h at a re oper at i ng pr i nciple s of a vacuu m
pump with back-ﬂow cooling system?
The rotor tur ns in the sequence of (１)to (５).
The light color sect ion of t he d raw ing
indicates the vacuum (suction pressure), while
the dark color section indicates the dischargepres su re . The lef t side rotor indicatesback-ﬂow cooling system function.

(１)①

COOLEDGAS②

The rotor tips A and B are positioned to catch
suction gas in volume"V"(moving volume).

③(２)

The rotor has completely caught suction gas
in volume"V"and cooled gas whose pressure is
the same as the discharge pressure starts toﬂow back.

(３)

Furthermore, as the rotor turns, the cooled
g a s c ont i nue s t o ﬂ ow i nt o volu me “ V ”,
increasing the pressure in volume " V "toa ppr ox i m at e s a me w it h t he d i s c h a rg epressure.

④(４)

The pressure in volume"V"nearly equals tothe discharge pressure in the discharge port.

⑤(５) The volume“V” comes in direct contact todischarge pressure part and the gas shall bepushed into the discharge port area.

COOLEDGASDry vacuum pump operation principles
1. T he suc t ion g a s i nt o t he i n let of pu mp i scompres sed by rot at ion of rotors a ndtransferred to the peripheral gas passage at justthe outside of the housing.
2. T hen , g a s i s d iv ided t o t wo p or t ion s , one
portion is ﬂowing into the back ﬂow gas port oft he ﬁ r st st age t h rough t he per ipher a l g a s
passage and another portion ﬂows into the inletof the second stage.
3. The outer wall of the peripheral gas passage iscooled by water cooled jacket located outside of
the peripheral passage.

4. The intake gas continuously ﬂows through theperipheral gas passage while radiating heat tooutside wall of the passage.
5. That working of ﬂow and compression to nextstage is repeated till ﬁ nal stage a ndconsequent ly t he g a s is compres sed toatmosphric pressure and discharged.
6. Condensable gas would be condensed according
to its pressure. S ome cases suction gas has
carry over liquid. In both cases, liquid would beﬂown down with handling gas and discharged
to the atmosphere.
7. The vertical compact dry vacuum pump insureseasy draining of liquid without any controls.

■Pump inner flow

COOLINGWATER

PORT TO
NEXT STAGE

CASING

BACK-FLOWGAS PORTROTOR
BACK-FLOWGAS PORTPERIPHERALGAS PASSAGE

COOLING
WATERConstruction●MotorMOTOR

Depending on the insta llation a rea the following motortype ca n be selected . TEFC , I ncreased sa fety explosion
proof, Flameproof enclosure, N EMA .

●Rotor
The three lobe rotor made of ductile cast iron has goodq u a l i t y s u bj e c t e d t o h i g h p r e c i s i o n m a c h i n i n g . T h e
i n s ide cle a r a nc e s a re pre c i s ely s e c u red a nd opt i mu me ﬃciency is g u a r a nteed . I n add it ion , a s it is per fect ly
ba la nced by me a n s dy n a m ic ba la nci ng m ach i ne , nois eand vibration are minimized.

●CasingROTOR

The casing made of cast iron , consisting of thesuc t ion - side h a l f a nd t he d i sch a rge - side h a l f , en su re s
suﬃcient strength and durability.

CASINGINTER
MEDIATECHAMBER●Bearing
T he b e a r i ng a r e h ig h pr e c i s io n b e a r i ng s w it h a lo a dcapacity suited for working conditions . Stableperformance and long service life are guaranteed.

WATERJACKET

GEAR
CASE

●Timing gearS p e c i a l c on s ider at ion s h ave be en g iven t o t he t i m i ng
gea r, si nce it is a s i mpor t a nt pa r t of vacuu m pu mp a s
wel l a s t he r ot or. M ade of ch r ome molybdenu m st e el ,c a r b o n i z e d , q u e n c h e d a n d g r o u n d , i t i s e x c e l l e nt i ndurability.

●Intermediate chamber
T he i nter med i ate ch a mber i s pl aced bet we en hou si ng
and gear case, and sealing system are assembled in thischa mber to avoid dropping dra in from casing into gea rcase.

Material Construction
The Standard material construction

Casing & Covers: Cast iron( FC2 5 0)
Rotor & Shaft : Ductile cast iron( FCD4 5 0)
Timing gear : Chrome Molybdenum
steel (SCM4 2 0H )"O"ring : FK M(Option: Per ﬂuor)
Lip seal: FK M , P TFE
Gasket : Non-asbestos(Option: P TFE)
Special material option

Ductile cast iron (casing)
Nickel coating (casing & rotor)
P TFE coating(casing & rotor)

Performance
Dry vacuum pump type"TRV"PUMPING SPEED(㎥/min)

50Hz

SUCTION PRESSURE

PUMP
MODEL
TRV404
TRV405
TRV406
TRV408
TRV410SUCTIONDISCHARGE

D1 (mm)4050
6580100

D 2 (mm)
2532
405065

PUMPINGSPEED(m 3/min)ULTIMATE
PRESSURE
(Pa)

1.0
1.9
3.0
5.0
7.8

200
110
80
7060

MOTOR

COOLINGWATER
CAPACITY(kW)(Lit/min)2.2
3,75.57.51157101420

MOTOR

COOLINGWATER
CAPACITY(kW)(Lit/min)2.23.75.5111557102028

PUMPING SPEED(㎥/min)

60Hz

SUCTION PRESSURE

PUMP
MODEL
TRV404
TRV405
TRV406
TRV408
TRV410SUCTIONDISCHARGE

D1 (mm)40506580100

D2 (mm)2532405065

PUMPINGSPEED(m 3/min)ULTIMATE
PRESSURE
(Pa)

1.2
2.3
3.7
6.0
9.5

150
95706050

Performance
Dry vacuum pump type "TAV"("TRV" + Mechanical Booster)

PUMPING SPEED(㎥/min)

50Hz

SUCTION PRESSURE

MODEL
TAV0501
TAV0651
TAV0802
TAV1002
TAV1251

SUCTION DISCHARGE
D1 (mm)
506580100125

D 2 (mm)2532405065PUMPING
SPEED(m 3/min)
3.0
5.7
9.0
13.520ULTIMATEM E CHPRESSURE BOO STER
MODEL(Pa)TRA0501
159
TRA0651
7
TRA0802
TRA1002
65
TRJ1251

MOTOR
(kW)
1.5
2.2
3.7
3.7
5.5

DRY
VACUUM
PUMP
MODEL

TRV404
TRV405
TRV406
TRV408
TRV410MOTORCOOLINGWATER
CAPACITY

(kW)
2.2
3.7
5.5
7.511(Lit/min)
57101420

MOTOR

COOLINGWATER
CAPACITYPUMPING SPEED(㎥/min)

60Hz用

SUCTION PRESSURE

MODEL
TAV0501
TAV0651
TAV0802
TAV1002
TAV1501

SUCTION DISCHARGE
D1 (mm)
506580100150D 2 (mm)2532405065

PUMPINGSPEED(m 3/min)
3.6
6.7
111625.5

ULTIMATEM E CHPRESSURE BOO STER
MODEL(Pa)12
TRA0501
8
TRA0651
6
TRA0802
5
TRA1002
TRJ1501
4

MOTOR(kW)
1.5
2.2
3.7
5.5
5.5

DRY
VACUUM
PUMP
MODEL

TRV404
TRV405
TRV406
TRV408
TRV410

(kW)
2.2
3.7
5.5
1115(Lit/min)
57102028

Dimension
Dry vacuum pump type "TRV"SUCTION D₁
JIS10 FLANGEDISCHARGE D₂
JIS10 FLANGEKKCOOLING WATER OUTLET(Rc-d)

COOLING WATER INLET(Rc-d)[mm]PUMP
MODEL
TRV404
TRV405
TRV406
TRV408
TRV410A

B

EF

GH1H2H3d200
205
205270270255
265265320320460
460
460600600

650675675
790
790450500
500
700700

405
450
540
750
755

750
840
860
1190
1190

965
1020
1170
1685
1765

1/2
1/2
1/2
1/2
1/2

Dimension
Dry vacuum pump type "TAV"("TRV"+ Mechanical Booster)

SUCTION D₁
JIS10 FLANGEKDISCHARGE D₂
JIS10 FLANGEKCOOLING WATER INLET(Rc-d)COOLING WATER INLET(Rc-d)[mm]
MODELAB

CEFGH1H2

H3IJd

TAV0501
TAV0651
TAV0802
TAV1002
TAV1251
TAV1501

345
385
430
430
550
550

600
610
650
720
930
930

255
265
265
345
345
345

1000
1120
1230
1300
1600
1600

1300
1350
1435
1600
1950
1950

450
530
530
660
700
700

915
945
1100
1200
1200
1200

740
895
895
1120
1150
1150

1020
1060
1280
1580
1730
1820

385
395
420
470
480
530

265
300
340
390
430
480

1/2
1/2
1/2
1/2
1/2
1/2

Dimensions may be subject to change without prior notice.

Unozawa Products
1.Rotary blower(Roots type)2.Rotary vacuum pump(Roots type)
3.Dry Vacuum pump
4.Mechanical booster
5.Water ring Vacuum pumpInquiries
When inquiring about Unozawa Dry vacuum pump,please furnish the following information:
1. Application:

Vacuum distillation, Solvent recovery, Vacuum drying etc.

2. Specification:

Pumping speed, Suction pressure, Suction gas temperature,
Ultinate vacuum pressure

3. Handling gas:

Gas name,Corrosiveness4. Condition of installation:

Indoor or Outdoor

5. Driver and Utillity:

Motor type, Voltage, Frequency, Cooling water temperature,
Cooling water pressure

6. Accessories&Spare parts:

Required or not

7. Painting color:(Unozawa standard color is munsell 5B-4/1.5)

Head Office & Tamagawa Factory : 2-36-40, Shimomaruko,
Ohta-ku Tokyo 146-0092 Japan
Tel. ＋81-3-3759-4191 Fax. ＋81-3-3759-4251
Sales office : Tel. ＋81-3-3759-8101 Fax. ＋81-3-3759-8105
Osaka sales : Sakurabashi yachiyo Bldg., 2-5-6 Umeda,
Kita-ku, Osaka 530-0001 Japan
Tel, ＋81-6-6344-0747 Fax. ＋81-6-6344-2405

http://www.unozawa.co.jp
While every care has been taken in the preparation of data and dimensional drawings,
we reserve the right to change specifications without notice.